Auto Reply Comments Simsimi

<?php
$token = "access_token";

function curl($url, $post=null) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    if ($post!=null) {
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    }
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $eks = curl_exec($ch);
    return json_decode($eks);
}
function simsimi($str) {
    $jawab = curl("http://simsimi.com/getRealtimeReq?uuid=r5KZWDNqCpbqxlqfWisboiisKRmaNRHHMTlmHBFJZpV&lc=id&ft=0&reqText=".urlencode($str)."&status=W");
    if ($jawab->respSentence) {
        $pesen = $jawab->respSentence;
    } else {
        $pesen = ":p";
    }
    $preg = preg_replace("/simsimi|simi|Simsimi|Simi|.simi|sim/is", " w", $pesen);
    return $preg;
}

$me = curl("https://graph.facebook.com/me?access_token={$token}");
$penta = curl("https://graph.facebook.com/me/home?access_token={$token}&fields=id,from,message&limit=10")->data;
if (file_exists("log.txt")) {
    $log = json_encode(file("log.txt"));
} else {
    $log = "";
}
foreach ($penta as $data) {
    $com = curl("https://graph.facebook.com/{$data->id}/comments?access_token={$token}&fields=id,message,from&method=get");
    if (sizeof($com->data) > 0) {
        foreach ($com->data as $kom) {
            if (eregi($kom->id, $log)) {
                echo "sudah";
            } else {
                $x = "{$kom->id} \n";
                $y = fopen("log.txt", "a");
                fwrite($y, $x);
                fclose($y);

                $naon = $kom->message;
                $euy = simsimi($naon);
                $mesej = "( ".$kom->from->name." : ".$naon." ) 👉 ".$euy;
                $mess = rawurlencode($mesej);
                if ($kom->from->id!==$me->id) {
                    curl("https://graph.facebook.com/{$data->id}/comments","access_token={$token}&method=post&message={$mess}");
                    curl("https://graph.facebook.com/{$data->id}/likes", "access_token={$token}&method=post");
                }
            }
        }
    }
}